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Trigger chunk load when remove_spawn_chunks is enabled and end portal teleportation occurs

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Related: #404
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embeddedt 2024-05-11 22:08:38 -04:00
parent 60707e43b9
commit 965d105542
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1 changed files with 37 additions and 0 deletions
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common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/remove_spawn_chunks/EntityMixin.java Normal file
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package org.embeddedt.modernfix.common.mixin.perf.remove_spawn_chunks;
import com.llamalad7.mixinextras.injector.ModifyExpressionValue;
import net.minecraft.core.BlockPos;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.server.level.TicketType;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.level.ChunkPos;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.injection.At;
@Mixin(Entity.class)
public class EntityMixin {
/**
* @author embeddedt
* @reason If the spawn chunks are not loaded, end portals linking to the overworld will teleport entities into
* the void at the spawn position, which is not ideal. To solve this, we create a PORTAL ticket if the expected
* overworld chunk is missing.
*/
@ModifyExpressionValue(method = "findDimensionEntryPoint", at = @At(value = "INVOKE", target = "Lnet/minecraft/server/level/ServerLevel;getSharedSpawnPos()Lnet/minecraft/core/BlockPos;"), require = 0)
private BlockPos mfix$triggerChunkloadAtSpawnPos(BlockPos spawnPos, ServerLevel destination) {
// Only apply this change if the overworld is the destination
if (destination.dimension() == ServerLevel.OVERWORLD) {
// No ticket is required if the chunk happens to already be loaded
if(!destination.hasChunk(spawnPos.getX() >> 4, spawnPos.getZ() >> 4)) {
// Create a portal ticket. While we could just load the chunk once, it would immediately unload on the
// next tick, causing churn. The ticket will keep it loaded for a few seconds which should give high
// performance for farms pumping things through portals frequently.
BlockPos key = spawnPos.immutable();
destination.getChunkSource().addRegionTicket(TicketType.PORTAL, new ChunkPos(key), 3, key);
// Wait for the chunk to be loaded, as adding the ticket is asynchronous
destination.getChunk(key);
}
}
return spawnPos;
}
}